dead

Someone who's dead is not alive anymore. If you accidentally hit a squirrel with your car, you might stop and check to see if it's alive or dead.

People — and animals — who are deceased are dead, and if you forget to water your favorite plant, it may be dead too. You can even use this word for inanimate objects: when your car's battery runs out of power, your car won't start because it's dead. People describe themselves as dead when they're exhausted or lacking appropriate emotion: "Her voice was dead and cold." If your town is boring, you can say, "It's dead here on the weekends."

Definitions of dead
  1. adjective
    no longer having or seeming to have or expecting to have life
    “the nerve is dead
    “a dead pallor”
    “he was marked as a dead man by the assassin”
    Synonyms:
    asleep, at peace, at rest, deceased, departed, gone
    dead
    assassinated
    murdered by surprise attack for political reasons
    bloodless, exsanguine, exsanguinous
    destitute of blood or apparently so
    brain dead
    having irreversible loss of brain function as indicated by a persistent flat electroencephalogram
    breathless, inanimate, pulseless
    appearing dead; not breathing or having no perceptible pulse
    cold
    lacking the warmth of life
    d.o.a.
    abbreviation for `dead on arrival' at the emergency room
    deathlike, deathly
    having the physical appearance of death
    defunct
    having ceased to exist or live
    doomed
    marked for certain death
    executed
    put to death as punishment
    fallen
    killed in battle
    late
    having died recently
    exanimate, lifeless
    deprived of life; no longer living
    murdered
    killed unlawfully
    nonviable
    not capable of living or developing successfully
    slain
    killed; `slain' is formal or literary as in "slain warriors"
    stillborn
    (of newborn infant) showing no signs of life at birth; not liveborn
    stone-dead
    as lifeless as a stone
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    Antonyms:
    alive, live
    possessing life
    liveborn
    (of newborn infant) showing signs of life after birth; not stillborn
    viable
    capable of life or normal growth and development
    vital
    manifesting or characteristic of life
    animate
    endowed with animal life as distinguished from plant life
    show more antonyms...
  2. adjective
    not showing characteristics of life especially the capacity to sustain life; no longer exerting force or having energy or heat
    “Mars is a dead planet”
    dead soil”
    dead coals”
    “the fire is dead
    Synonyms:
    extinct
    (of e.g. volcanos) permanently inactive
    extinct, out
    being out or having grown cold
    lifeless
    not having the capacity to support life
    out of play
    (of a ball) "a ball that is out of play is dead"
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    Antonyms:
    live
    exerting force or containing energy
    active
    (of e.g. volcanos) erupting or liable to erupt
    in play
    of a ball
    living
    (used of minerals or stone) in its natural state and place; not mined or quarried
    show more antonyms...
  3. adjective
    devoid of physical sensation; numb
    “his gums were dead from the novocain”
    synonyms: deadened
    insensitive
    not responsive to physical stimuli
  4. adjective
    (followed by `to') not showing human feeling or sensitivity; unresponsive
    “passersby were dead to our plea for help”
    synonyms: numb
    insensitive
    deficient in human sensibility; not mentally or morally sensitive
  5. adjective
    devoid of activity
    “this is a dead town”
    Synonyms:
    inactive
    lacking activity; lying idle or unused
  6. adjective
    physically inactive
    “Crater Lake is in the crater of a dead volcano of the Cascade Range”
    Synonyms:
    extinct
    (of e.g. volcanos) permanently inactive
  7. adjective
    lacking resilience or bounce
    “a dead tennis ball”
    Synonyms:
    inelastic
    not elastic
  8. adjective
    lacking acoustic resonance
    dead sounds characteristic of some compact discs”
    “the dead wall surfaces of a recording studio”
    Synonyms:
    nonresonant, unreverberant
    not reverberant; lacking a tendency to reverberate
  9. adjective
    not circulating or flowing
    dead air”
    dead water”
    synonyms: stagnant
    standing
    (of fluids) not moving or flowing
  10. adjective
    drained of electric charge; discharged
    “a dead battery”
    synonyms: drained
    uncharged
    of a particle or body or system; having no charge
  11. noun
    people who are no longer living
    “they buried the dead
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    Antonyms:
    living
    people who are still living
    types:
    slain
    people who have been slain (as in battle)
    type of:
    people
    (plural) any group of human beings (men or women or children) collectively
  12. noun
    a time when coldness (or some other quality associated with death) is intense
    “the dead of winter”
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    type of:
    time
    an indefinite period (usually marked by specific attributes or activities)
  13. adjective
    no longer having force or relevance
    “a dead issue”
    Synonyms:
    noncurrent
    not current or belonging to the present time
  14. adjective
    out of use or operation because of a fault or breakdown
    “a dead telephone line”
    “the motor is dead
    Synonyms:
    inoperative
    not working or taking effect
  15. adjective
    not surviving in active use
    “Latin is a dead language”
    Synonyms:
    extinct, nonextant
    no longer in existence; lost or especially having died out leaving no living representatives
  16. adjective
    not yielding a return
    dead capital”
    synonyms: idle
    unprofitable
    producing little or no profit or gain
  17. adjective
    very tired
    “I'm dead after that long trip”
    synonyms: all in, beat, bushed
    tired
    depleted of strength or energy
  18. adjective
    unerringly accurate
    “a dead shot”
    “took dead aim”
    Synonyms:
    precise
    sharply exact or accurate or delimited
  19. adjective
    complete
    “came to a dead stop”
    synonyms: utter
    complete
    having every necessary or normal part or component or step
  20. adverb
    completely and without qualification; used informally as intensifiers
    “you can be dead sure of my innocence”
    “was dead tired”
    dead right”
    synonyms: absolutely, perfectly, utterly
  21. adverb
    quickly and without warning
    synonyms: abruptly, short, suddenly
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